I am getting quotes from furniture removal companies. Every email with the word 'removal' in the subject line is being filtered directly to the trash/ bin. But I have not set up a filter for this to happen (obviously not - I'm trying to get the quotes!); and no filter to show this is listed in the filter section of 'settings' (otherwise I could just edit it out). Can anyone tell me what is going on?
The simplest thing to do is to remove the filter.
It sounds like something you may have added to address spam. Strings like "to request removal" are pretty common in spam messages.
There is a chance that your account is compromised. You should, of course, check to ensure that your account is not being accessed from somewhere it shouldn't be and that you haven't given access to apps that shouldn't be there.